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Charra [1.4K]
3 years ago
10

Solve the system of equations by using the substitution method X+Y=3 X=2Y

Mathematics
1 answer:
Marrrta [24]3 years ago
6 0

Answer:

If you're asking me to solve for Y, y = 1.

Step-by-step explanation:

Simple. If x is 2x y and y = 1, 2 x 1 is 2 plus y being equal to 1 will give you a total of 3. Hope this helped.

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Hi please help :)
Debora [2.8K]
Hey mate 

It is C. 0 because there is no b in the <span>equation</span>
3 0
3 years ago
What is the justification for each step in the solution of the equation?
otez555 [7]

23x-13=2(x+2)

First you would distribute the 2 into the parenthesis

It will look like this after: 23x-13=2x+4

Then you would subtract 2x on both sides because u have to get the x's on one side

It will look like this after:21x-13=4

Then you would add 13 to both sides

It will look like this after: 21x=17

Then you would divide 21 on both sides

Your final product is 21/17


7 0
3 years ago
What is the value of the expression?<br><br> 5^2 - 3^0
Vlad1618 [11]
5^2 = 25
3^0 = 1 (anything that is exponented by 0 is 1)

25 - 1 = 24

24 is your answer

hope this helps
5 0
3 years ago
Read 2 more answers
A square has an area of 9yd^2. What is the length of each side?
BlackZzzverrR [31]

Answer: The side length is 3 yards.

Step-by-step explanation:

To find the area of a square, you have to square one of it's side lengths since they all share the same length.  Since we know the area, and we need to find the side length so we just need to find the square root of the area.

\sqrt{9} = 3    

The side length is 3 yards.

3 0
3 years ago
HELP PLEASSEEE IT REALLY URGENT!!!!<br><br> PLEASE ONLY ANSWER IF YOU ARE CONFIDENT!
Dmitry [639]

Answer:

B. 12.5 feet below the surface of the water

Step-by-step explanation:

-20 + (-32.5) + 40

40 - 52.5

= -12.5 feet

= 12.5 feet below the water

6 0
2 years ago
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